Phys 2 Flashcards
1
Q
Inferior Leads
A
II, III, AVF
*inferior RCA
2
Q
Lateral Leads
A
I, V4, V5, V6, AVL
*lateral circumflex
3
Q
Septal
A
V1 and V2
*LAD
4
Q
Anterior
A
V2, V3, V4
*LAD
5
Q
PR interval normal time
A
.16ms
6
Q
QRS normal time
A
.10 ms
7
Q
QT interval normal time
A
.35ms
8
Q
P wave
A
atrial depolarization (via SA node) -technically the wave begins before contraction
Phase 0 in atrial myocyte
9
Q
PR interval
A
AV node delays signal before ventricular contraction
10
Q
ST segment
A
AP phase 2 delays repolarization of ventricles
-all cells are depolarized—>why line is flat at baseline
11
Q
T wave
A
ventricle repolarization (typically left to right, base to apex) -technically the wave begins before relaxation
Phase 3 of ventricular muscle
12
Q
QRS complex
A
phase 0 of ventricular myocytes
-technically the wave begins before contraction
